Abstract: A lid for an accumulator battery includes a substantially flat main closure element for closing a container of the battery, in which closure element holes are formed, a secondary closure element which is mounted on the main element and in which there are plugs that are fitted in the holes, and a duct which is formed in the secondary element, is in flow communication with the holes, and is provided for the discharge of the gases that are generated inside the battery container. The main and secondary elements of the lid together form a box-like structure defining a chamber which is in flow communication with the holes and inside which the main and secondary elements are connected to one another by partitions that extend perpendicularly relative to the plane in which the main element extends and are arranged in a manner such as to define a labyrinth which connects the holes of the main element with the gas-discharge duct.

Abstract: A lid for an accumulator battery includes a substantially flat main closure element for closing a container of the battery, in which closure element a holes are formed, a secondary closure element which is mounted on the main element and in which there are plugs that are fitted in the holes, and a duct which is formed in the secondary element, is in flow communication with the holes, and is provided for the discharge of the gases that are generated inside the battery container. The main and secondary elements of the lid together form a box-like structure defining a chamber which is in flow communication with the holes and inside which the main and secondary elements are connected to one another by partitions that extend perpendicularly relative to the plane in which the main element extends and are arranged in a manner such as to define a labyrinth which connects the holes of the main element with the gas-discharge duct.

Abstract: A plug-holder strip for an accumulator battery includes a plurality of plugs to be fitted in complementary holes in a cover of a battery, and a support structure which interconnects the plugs, the plugs being connected to the support structure by a yielding connection which allow the plugs to move relative to the support structure to enable the plugs to be aligned with the holes in the cover, and wherein each plug is fitted in a through-hole in the support structure, and the connection includes an annular sealing member which surrounds the hole and forms a seal between the plug and the support, and a retainer which are associated with the support structure and compress the plug onto the sealing member to ensure leaktightness while maintaining the ability of the plug to move relative to the support.

Abstract: A plug-holder strip for an accumulator battery comprises a plurality of plugs to be fitted in complementary holes in a cover of a battery, and a support structure which interconnects the plugs, the plugs being connected to the support structure by yielding connection means which allow the plugs to move relative to the support structure to enable the plugs to be aligned with the holes in the cover, and wherein each plug is fitted in a through-hole in the support structure, and the connection means comprise an annular sealing member which surrounds the hole and forms a seal between the plug and the support, and retaining means which are associated with the support structure and compress the plug onto the sealing member to ensure leaktightness whilst maintaining the ability of the plug to move relative to the support.

Abstract: The accumulator comprises a container or vessel with a plurality of holes which define vent ducts for the gases developed in the accumulator. A filtering element is provided in each duct for allowing gases to pass through but preventing the electrolyte from passing through. The filtering element is constituted by a porous substrate combined with a polytetrafluoroethylene membrane.